How would the molar solubility of barium sulfate be impacted if it were to be dissolved in...

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Chemistry

Howwould the molar solubility of barium sulfate be impacted if it wereto be dissolved in 0.010 M CaSO4 (with no other change inconditions)?

A. It would increase
B. It would stay the same
C. It would decrease
D. There is not enough information to provide an answer

Answer & Explanation Solved by verified expert

4.4 Ratings (873 Votes)

ksP FOR BaSO4= [Ba+2] [SO4-2] =

let x= [Ba+2]

then x²=1.1*10^-10, x= 1.0488*10-5 M/L

[SO4-]2 = 1.0488*10-5

when 0,01m CasO4 is dissolved

CaSO4-----> Ca+2 +SO4-2

KSp =2.4*10-5

y²= 2.4*10-5, where y= [Ca+2] =[SO4-]2

y= 0.004899M

[SO4-2] =0.004899

Â Â Â Â Â BaSO4Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Ba+2Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â SO4-2

initial Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0.004899

changeÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â xÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â x

equilibriumÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â xÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0.004899+x

KSp = x*(x+0.004899)= 1.1*10^-10, where x= solubility of BaSO4

when solved using excel,. x = 2.2*10^{- 8} M. The solubility will decrease ( C is correct)

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